Struct StructArrayBuilder 

pub struct StructArrayBuilder { /* private fields */ }

Implementations

impl StructArrayBuilder

pub fn new( dtype: ArrowDataType, inner_builders: Vec<Box<dyn ArrayBuilder>>, ) -> Self

Trait Implementations

impl StaticArrayBuilder for StructArrayBuilder

type Array = StructArray

fn dtype(&self) -> &ArrowDataType

fn reserve(&mut self, additional: usize)

fn freeze(self) -> StructArray

Consume this builder returning the built array.

fn freeze_reset(&mut self) -> Self::Array

Return the built array and reset to an empty state.

fn len(&self) -> usize

Returns the length of this builder (so far).

fn extend_nulls(&mut self, length: usize)

Extend this builder with the given number of null elements.

fn subslice_extend( &mut self, other: &StructArray, start: usize, length: usize, share: ShareStrategy, )

Extends this builder with the contents of the given array subslice. May panic if other does not match the dtype of this array.

fn subslice_extend_each_repeated( &mut self, other: &StructArray, start: usize, length: usize, repeats: usize, share: ShareStrategy, )

The same as subslice_extend, but repeats each element repeats times.

unsafe fn gather_extend( &mut self, other: &StructArray, idxs: &[IdxSize], share: ShareStrategy, )

Extends this builder with the contents of the given array at the given indices. That is, other[idxs[i]] is appended to this array in order, for each i=0..idxs.len(). May panic if other does not match the dtype of this array.

fn opt_gather_extend( &mut self, other: &StructArray, idxs: &[IdxSize], share: ShareStrategy, )

Extends this builder with the contents of the given array at the given indices. That is, other[idxs[i]] is appended to this array in order, for each i=0..idxs.len(). May panic if other does not match the dtype of this array. Out-of-bounds indices are mapped to nulls.

fn extend(&mut self, other: &Self::Array, share: ShareStrategy)

Extends this builder with the contents of the given array. May panic if other does not match the dtype of this array.

fn subslice_extend_repeated( &mut self, other: &Self::Array, start: usize, length: usize, repeats: usize, share: ShareStrategy, )

The same as subslice_extend, but repeats the extension repeats times.